public function resolve(CartItemInterface $item, $request)
{
$productId = $request->query->get('productId');
// If no product id given, or product not found, we throw exception with nice message.
if (!$productId || !($product = $this->getModelRepository()->find($productId))) {
throw new ItemResolvingException('Requested model was not found');
}
// Assign the product to the item and define the unit price.
$item->setProduct($product);
$item->setSize($form->getData());
$item->setUnitPrice($product->getCostRub());
// Everything went fine, return the item.
return $item;
}
